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  • pH
  • ORP (mV, Redox or EH) optional
  • Temperature
  • Sensors and buffers included
  • Ready to use out of the box
  • One-touch calibration
  • Splashproof
  • Fold-out stand
  • Australian made

The Aqua-pH is an economical splashproof pH meter with pH, mV and Temperature readouts. It provides accurate, reliable measurements, and is very easy to use.

Genuine one-touch calibration puts an end to time-consuming calibration procedures.

The Aqua-pH comes with all the accessories needed for immediate use. A hard carry case is also available. 

Rugged and Reliable
TPS has used the latest microprocessor electronics to totally eliminate all internal and external adjustments. The result is a dramatic increase in reliability. The unit is ideal for field or factory use.

24 Character Alphanumeric Display
The two-line, 24 character display shows the pH or mV reading plus temperature simultaneously. Alternatively, a Large Digit mode is available. This shows one reading at a time at almost double the size. To simply use of the Aqua-pH, plain English prompts and error messages are provided. There are no codes to interpret like some other brands.

One-touch Calibration
Calibration of the Aqua-pH could not be simpler. Just place the pH electrode into any of the pre-selected buffers and press the Calibrate key. Repeat for a second point and that's it !

The Aqua-pH displays probe condition after calibration.

All calibration information is stored in memory when the Aqua-pH is switched off, even if the battery is removed.

Low Battery Drain
The Aqua-pH will provide in excess of 100 hours of continuous use with an alkaline 9 volt battery.

A handy battery-saver function switches the Aqua-pH off after 5 minutes if no keys have been pressed. This function can also be disabled for continuous operation.

Temperature Compensation
Correct temperature compensation is vital for accurate pH measurements. The operator can choose to use the Automatic Temperature Compensation (ATC) probe supplied or enter a temperature value manually. Temperature compensation in both cases is performed by the microprocessor for optimum accuracy.

Australian Quality
The Aqua Series is proudly designed and manufactured in Australia. Our aim is to provide you with the best quality, service and value for money. The TPS Quality System has been certified in accordance with the AS/NZS ISO 9001 standard. Since 1968, TPS has built a reputation for excellent backup service that is second to none.


Range : 0 to 14.00 pH
Resolution : 0.01 pH
Accuracy : +/-0.01pH

Range : 0 to +/-1000 mV
Resolution : 1 mV
Accuracy : +/-1 mV

Range : -10.0 to 120.0 oC
Resolution : 0.1 oC
Accuracy : +/-0.2 oC

Input Impedance
>3 x 1012 Ohms

Asymmetry Range
-1.00 to +1.00 pH

Slope Range
85.0 to 105.0%

Temperature Compensation
0 to 100 oC, automatic or manual. The Aqua-pH automatically detects whether or not the temperature sensor is connected.

Automatic Buffer Recognition
4.01, 6.86, 7.00, 9.18 and 10.01 pH

Tough, ABS plastic case, waterproof to IP65

Display 24 Character alphanumeric LCD with full-text prompts and error messages.

Battery Saver Function
On : Automatically switches off after 5 minutes of no use.
Off : Unit remains on for continuous use.

9V Alkaline battery for 100+ hours.

Dimensions 157 x 78 x 35 mm

Instrument only : Approx 250g
Full Kit : Approx 1.5kg

Temperature : 0 to 45 OC
Humidity : 0 to 90% R.H.

  • Aqua P
  • 200ml of pH 7 Buffer
  • 200ml of pH 4 Buffer
  • Your Choice of pH or ORP probe (Standard, Premium)
  • Temperature Probe
  • Instruction Manual
  • Optional Hard Case